Ok to put it in terms you simply minded people can understand since most of you don't seem to understand that magic crit hit and melee are way different.
Magic crit hit is +10MAB. At most that is +10% dmg on most blms that is more like +6-7% dmg.
A crit hit from melee is +1.0 to pdif. Most the time meleeing that is about +50-200% to dmg.
Now add on this is only 7% chance. That means on average this is only +.7 MAB.
So yeah 1 more MAB is definitely better. And for me on AM2 1 MAB~2.3 int and for T4 1 MAB~ 1.5 int so yeah 2 int or 1 more MAB is not only more dmg overall but much much more consistent which matters alot since you are always doing alot and will overkill and such
Still is a nice augment, not everyone can get int+, although this was released after SE had announced higher levels of augmentations. Would still be interesting to see this coupled with a Witch Sash and Wise Strap.